Fidelity Merrimack Street Trust - Fidelity Corporate Bond ETF
US ˙ ARCA ˙ US3161881012

SecurityFCOR / Fidelity Merrimack Street Trust - Fidelity Corporate Bond ETF
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership61,211 shares
Latest Disclosed Value $ 2,884,874
Citadel Advisors Llc ownership in FCOR / Fidelity Merrimack Street Trust - Fidelity Corporate Bond ETF

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 61,211 shares of Fidelity Merrimack Street Trust - Fidelity Corporate Bond ETF (US:FCOR) valued at $2,884,874 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Fidelity Merrimack Street Trust - Fidelity Corporate Bond ETF. The current value of the position is $2,877,529 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 61,211 61,211 2,885 0.0004
2026-02-17 2025-12-31 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 0 -100.00 0
2025-11-14 2025-09-30 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 27,609 27,609 1,325 0.0002
2025-08-14 2025-06-30 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 0 -11,517 -100.00 0 -100.00
2025-05-15 2025-03-31 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 11,517 4,979 76.15 541 78.22 0.0001
2025-02-14 2024-12-31 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 6,538 6,538 303 0.0001
2024-08-14 2024-06-30 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 0 -5,975 -100.00 0 -100.00
2024-05-15 2024-03-31 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 5,975 5,975 278 0.0001
2022-11-14 2022-09-30 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 0 -46,324 -100.00 0 -100.00
2022-08-15 2022-06-30 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 46,324 -43,789 -48.59 2,149 -52.87 0.0006
2022-05-16 2022-03-31 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 90,113 11,879 15.18 4,560 5.95 0.0009
2022-02-14 2021-12-31 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 78,234 68,925 740.41 4,304 735.73 0.0009
2021-11-15 2021-09-30 13F FIDELITY MERRIMACK STR TR Cmn 316188101 9,309 -61,643 -86.88 515 -86.97 0.0001
2021-08-16 2021-06-30 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 70,952 -134,244 -65.42 3,953 -64.46 0.0009
2021-05-21 2021-03-31 13F/A-1 FIDELITY COVINGTON TRUST CORP BOND ETF 316188101 205,196 201,108 4,919.47 11,122 4,652.99 0.0027
2021-05-17 2021-03-31 13F FIDELITY COVINGTON TRUST CORP BOND ETF 316188101 205,196 201,108 11,122 0.0027
2021-02-16 2020-12-31 13F FIDELITY MERRIMACK STR TR CORP BOND ETF 316188101 4,088 4,088 234 0.0001
2020-05-15 2020-03-31 13F FIDELITY Cmn 316188101 0 -4,006 -100.00 0 -100.00
2020-02-14 2019-12-31 13F FIDELITY Cmn 316188101 4,006 4,006 212 0.0001
2019-02-14 2018-12-31 13F FIDELITY Cmn 316188101 0 -6,467 -100.00 0 -100.00
2018-11-13 2018-09-30 13F FIDELITY Cmn 316188101 6,467 6,467 314 0.0001
2018-02-09 2017-12-31 13F FIDELITY Cmn 316188101 0 -16,935 -100.00 0 -100.00
2017-11-09 2017-09-30 13F FIDELITY Cmn 316188101 16,935 -24,529 -59.16 859 -59.04 0.0007
2017-08-11 2017-06-30 13F FIDELITY Cmn 316188101 41,464 41,464 2,097 0.0018
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.